co-ax valves inc. USA

Special Valves

PLB 05

Data Sheets
General Operating Manual
ports threads NPT 1/4, NPT 3/8
function NC
pressure range 0-375 psi
CV value 18 l/min
media liquid  pasty
flow direction A B as marked
switching cycles 60 1/min
switching time 50 ms opening
50 ms closing
media temperature +140 °F
weight 0,36 kg

The valves' technical design is based on media and application requirements. This can lead to deviations from the general specifications shown on the data sheet with regards to the design, sealing materials and characteristics.

Product description

Series PLB 05 valves are pneumatically actuated with two port connections and two switching positions with a nominal orifice size of approx. 0.20". The control is carried out using a 3/2-way or 5/2-way pilot valve provided by the customer. Series PLB 05 has been specially designed for glue. This valve series has been successfully used for glue applications (laminated wood gluing and composite lumber) and in bonding applications, up to 375 psi pressure rating.

Series PLB has a special feature – they are hermetically sealed to the outside by a metal bellows and are also equipped with wear resistant valve seats. Media that hardens when making contact with air would destroy a conventional valve. Series PLB can be mounted as a single valve as well as in a manifold block in order to achieve the necessary glue bead spacings for glue applications.


  • Specially developed for glue and adhesive
  • Hermetically sealed against the atmosphere by means of a metal bellows - no leakage bore
  • No carrying-over of the medium thanks to dynamic seals
  • Wear-resistant valve seat
  • In the event of actuation air failure, the valve fails closed and tight at the seat
  • Valve body available in stainless steel or aluminum
  • Maximum pressure of 375 psi
  • Manifold block design available
  • Low weight of 360 grams
  • Connection port B also available with nozzle

Special Valves